@timorl You must assume they do (even if the UI doesn't show that), because IIUC poll responses are just messages sent to their ActivityPub inbox.
@robryk From a security perspective sure, but I'm more interested in UX in this case.
@timorl Then it very obviously depends on software :)
@timorl Surprisingly enough, even honk (if you emit a poll using "send activity" API) will show you responses (they will appear like text posts responding to the poll).